CODEWITHSUNDEEP
c#.netarrays
Frank Lioty
Frank Lioty

Reputation: 977

array of custom type arrays

I have defined a new class type called Hotspot. I need 2 dynamic array of Hotspot (I used List) and a third one that allow me to "switch" between them. Here my code:

List<Hotspot> items = new List<Hotspot>();
List<Hotspot> locations = new List<Hotspot>();

Hotspot[][] arrays = new Hotspot[][]{items, locations};

but arrays doesn't work. I just need it so I can easily access to items/locations array.

In F# I did it in this way:

let mutable items = new ResizeArray<Hotspot>()
let mutable locations = new ResizeArray<Hotspot>()

let arrays = [|items; locations|]

but I can't do the same thing in C#. Some help?

Upvotes: 3

Views: 352

Answers (2)

Jeff Mercado
Jeff Mercado

Reputation: 134811

items and locations are declared (and instantiated) as lists. Lists are not arrays and you're trying to assign them as arrays. Convert them to arrays or don't use arrays at all but a list instead.

Hotspot[][] arrays = new Hotspot[][]{ items.ToArray(), locations.ToArray() };
//or
List<Hotspot>[] lists = new[] { items, locations };

p.s., The F# ResizeArray<T> is essentially an alias to the .NET List<T>. So in effect, the arrays variable in your F# example is equivalent to lists in my example above, you created an array of lists.

Upvotes: 3

Thom Smith
Thom Smith

Reputation: 14086

List<Hotspot>[] arrays = new List<Hotspot>[]{items, locations};

Upvotes: 4

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